Show simple item record

dc.contributor.authorMng'ong'o, M
dc.contributor.authorComber, S
dc.contributor.authorMunishi, LK
dc.contributor.authorNdakidemi, PA
dc.contributor.authorBlake, W
dc.contributor.authorHutchinson, TH
dc.date.accessioned2022-02-15T12:11:38Z
dc.date.available2022-02-15T12:11:38Z
dc.date.issued2021-08
dc.identifier.issn2667-0100
dc.identifier.issn2667-0100
dc.identifier.other100200
dc.identifier.urihttp://hdl.handle.net/10026.1/18778
dc.description.abstract

This study was conducted to highlight status and distribution of potentially toxic elements (PTEs) in Usangu agroecosystem-Tanzania. The study involved 198 soil samples from 10 irrigation schemes including three land use. The concentrations of selected PTEs (Cd, Cr, Cu, Pb, Zn, As, Hg, Co, Nie etc.) were determined to estimate status, distribution, and contamination hierarchy. The total and bioavailable PTEs were determined by aqua regia digestion and Mehlich 3 methods, respectively. We observed variable total PTEs concentration (in mg/kg) among land use and irrigation schemes such as Cr (15), Co (2.9), Fe (7371), Mn (263), and Zn (18.2). Also, concentration of other PTEs (in µg/kg) were As (1382), Cd (22), Cu (3342), Hg (3.3), Ni (4107), and Pb (5661). It was observed that 99.5, 87, 66 and 12% of the studied soils had total Fe, As, Se and Hg concentration above allowable threshold in agricultural soils, respectively. The bioavailable PTEs fraction were lower than total values from different land use and irrigation schemes, higher values of bioavailable PTEs were associated with agricultural intensifications. The status of PTEs in Usangu agroecosystem observed to be at level potentially to cause damaging effect to soil invertebrates, plants, animals and human if remain unregulated. This study highlights baseline information and evidence for site-specific environmental management planning and a scientific basis required to establish PTEs management in agricultural soils to ensure health food and environmental safety.

dc.format.extent100200-100200
dc.languageen
dc.language.isoen
dc.publisherElsevier BV
dc.subject41 Environmental Sciences
dc.subject4104 Environmental Management
dc.subject4105 Pollution and Contamination
dc.subject15 Life on Land
dc.titlePotentially toxic elements status and distribution in Usangu agroecosystem-Tanzania
dc.typejournal-article
dc.typeJournal Article
plymouth.volume4
plymouth.publisher-urlhttp://dx.doi.org/10.1016/j.envc.2021.100200
plymouth.publication-statusPublished
plymouth.journalEnvironmental Challenges
dc.identifier.doi10.1016/j.envc.2021.100200
plymouth.organisational-group/Plymouth
plymouth.organisational-group/Plymouth/Admin Group - REF
plymouth.organisational-group/Plymouth/Admin Group - REF/REF Admin Group - FoSE
plymouth.organisational-group/Plymouth/Faculty of Science and Engineering
plymouth.organisational-group/Plymouth/Faculty of Science and Engineering/School of Geography, Earth and Environmental Sciences
plymouth.organisational-group/Plymouth/REF 2021 Researchers by UoA
plymouth.organisational-group/Plymouth/REF 2021 Researchers by UoA/UoA06 Agriculture, Veterinary and Food Science
plymouth.organisational-group/Plymouth/REF 2021 Researchers by UoA/UoA14 Geography and Environmental Studies
plymouth.organisational-group/Plymouth/Research Groups
plymouth.organisational-group/Plymouth/Research Groups/BEACh
plymouth.organisational-group/Plymouth/Research Groups/Marine Institute
plymouth.organisational-group/Plymouth/Users by role
plymouth.organisational-group/Plymouth/Users by role/Academics
plymouth.organisational-group/Plymouth/Users by role/Researchers in ResearchFish submission
dcterms.dateAccepted2021-07-03
dc.rights.embargodate2022-2-16
dc.identifier.eissn2667-0100
dc.rights.embargoperiodNot known
rioxxterms.versionofrecord10.1016/j.envc.2021.100200
rioxxterms.licenseref.urihttp://www.rioxx.net/licenses/all-rights-reserved
rioxxterms.licenseref.startdate2021-08
rioxxterms.typeJournal Article/Review


Files in this item

Thumbnail
Thumbnail

This item appears in the following Collection(s)

Show simple item record


All items in PEARL are protected by copyright law.
Author manuscripts deposited to comply with open access mandates are made available in accordance with publisher policies. Please cite only the published version using the details provided on the item record or document. In the absence of an open licence (e.g. Creative Commons), permissions for further reuse of content should be sought from the publisher or author.
Theme by 
Atmire NV